Identifying Inferior ST-Segment Elevation Myocardial Infarction in the Presence of Left Bundle Branch Block: Seeing
Poornima Vinod1, Bala Pushparaji1, Maxine Nelson1
1Department of Cardiovascular Medicine, MetroHealth Medical Center, Cleveland, Ohio, USA.
JACC. Case Reports
|May 21, 2026
Summary
Diagnosing ST-segment elevation myocardial infarction (STEMI) in patients with left bundle branch block (LBBB) is difficult. Modified Sgarbossa criteria improve the detection of acute coronary occlusion in these high-risk patients.
Area of Science:
- Cardiology
- Emergency Medicine
Background:
- Diagnosing ST-segment elevation myocardial infarction (STEMI) in patients with left bundle branch block (LBBB) is challenging due to baseline electrocardiogram abnormalities.
- These abnormalities can mask ischemic changes, leading to delayed diagnosis and poorer patient outcomes.
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